Churn attachment for centrifugal cream separators



Aug. 8, 1950 w. H. HARsTlcK CHURN ATTACHMENT EoR CENTRIFUGAL CREAM sEPARAToRs `Filed March 25, 1946 Patented Aug. 8, 195i) CHURN ATTAGHMENT FSR CENTRIF'UG-AL CREAM SEPAEATORS William n. narstick, oak Park, n1.,assigner to International Harvester Company, a corporation of New Jersey Application March 23, 1946, Serial No. 656,586

' This invention relates to a churn for churning butter or the like, and more particularly to a churn adaptedA to be used with a cream separator. More speclcally, the inventionl relates to an improved churn construction.

It is an object of this invention toprovide an Vimproved churn construction that is easily adaptable to be operated with a centrifugal cream separator. f l

It is another object of this invention to provide a rotatable churnfforbutter or the like which may be mounted on and be driven by the manual cranking shaft of a centrifugal cream separator. I

It is a still further object of this invention to provide a rotatable churn that is readily attached to and may be easily removed from a centrifugal cream separator so that the same may be cleaned and washed after using.

It is another object of the invention to provide anlimproved churn construction which may be readily washed and is inexpensive to manufacture. l

'It is still another object to provide an improved churn construction having paddle wheels connected to a cover plate or closure member for said churn.

Further objects and advantages of the invention will become apparent in the following specication wherein references are made to the ac- ;f,-

companying drawing:

Figure 1 is a front elevational view of a centrifugal cream separator having a churn operatively connected thereto;

Figure 2 is a cross-sectional view through a Casing I8 is a Stublshaft M churn;

Figure 3 is a bottom View of a cover plate or closure member for a churn; and

Figure 4 is a view taken along the line 4-4 of Figure 2.

A centrifugal cream separator is generally designated by the numeral Ill and consists of a vertically extending body portion or structure II. The cream separator IU includes a separating bowl of a conventional type and other associated parts which are not shown here since they form no part of the 'present invention. A horizontal shaft I2 projects from the supporting structure II and is driven by a gear or drive means, not shown, enclosed in a guard or cover I3. belt I4 drives the drive means and is operatively connected to a pulley I5 which is driven by a suitable power means such as an electric motor I6.

A churn for churning butter or the like is generally designated by the numeral I'I and com- 1 0mm.' (c1. 259-31) prises a churn casing I8 annular in shape and having at its top anopening I9. An opening 2i] is formed at one end of the casing I8 and `is normallyclosed by means of a closure plug-2|.

Formed atrthe bottom of the casing I8 is an annular projection 22 which is circumferentially in abutment with a driving disk 23. The driving disk 23 is'connected to the projection 22 by means of screws 24 only one of which is shown.' 1U 'I A cover plate vor closure member 25 having an annular shoulder 26 cooperates with the opening I9. An annular seal 2B is positioned at the outer periphery l of the annular shoulder 25 and is pressed between the closure member 25 and the churn Ycasing I8 for suitably sealing the opening The closure member 25 includes a pair of paddle members 21 and an enlarged paddle meniber 28 which are integrally formed `with said clos'uremember. The paddle members 21 and 28 project into the churn casing I8, the paddle member 28 extending beyond the periphery of the opening I9. A tubular shaft 29 Vis integrally formedfwith the cover plate 425 andthe paddle plate 25. The opening 30 is covered by a glass cover or transparent plastic window 3| which suitably seals the opening by means of a sealing ring 32. A clamping linger 33 resiliently clamps the cover 3l and the seal 32 to the cover portion 25 thereby providing an effective seal.

Connected to the bottom portion of the churn The stub shaft 34 is provided with an annular undercut portion 35 rigidly connected to driving disk 23, said portion projecting through an opening 36 into the churn casing I8. A seal 31 is provided between the churn casing I8 and an enlarged portion 35 of the stub shaft 34. The stub shaft 34 is further provided with a threaded opening 38 into which extends a threaded end 39 of a pin or connecting member 40. A seal 4I in abutment with the undercut portion 35 and the tubular member 29 suitably seals said tubular member from the interior of the churn casing I8. A set screw 4'2 is threaded to the end portion of the stub shaft 34 for clamping the churn I'I to the horizontally projecting shaft I2. The upper end of the connecting member 4l! is threaded at 43 and extends through the clamping finger 33. A wing nut 46! is screwed to the end of the connecting member 40, said wing nut serving to clamp the glass cover 3l to the cover member 25 and the cover member 25 to the churn casing IB.

It can now be seen that the objects of the invention have been fully achieved. A simple, wellconstructed, and novel churning device has been disclosed. As indicated in dotted lines at 45 in Figure '1, the churn casing I8 may also be used as a milk supply can for the centrifugal cream separator I0. When it is desired to churn cream the supply can is removed and is used as a churn. i

It is attached to the shaft I2 by means 0f the clamping means indicated, the shaft I2 normally having a hand crank connected thereto for manually turning and operating said cream separator.

The closure member 25 can be quickly attached and the wing nut 44 is tightened suiciently so that the opening I9 is properly sealed. The cream to be churned can then be introduced into the opening 30 whereupon said opening is closed by means of the glass cover 3l. The resilient clamping finger 33 thereupon is rotated over the glass cover 3l and with the sealing member 32 suitably seals the opening 30. The glassv cover 3l also provides a suitable inspection Window whereby the matter to be churned can be properly inspected at intervals. The matter tobe churned can also be introduced through the opening 20 by removing the plug 2l. This lopening also serves as a drain opening for draining buttermilk from the churn after the churning is completed; or, it may be used for introducing Water for washing the churned butter.

The paddle members 21 and 28 are so shaped that they can be inserted and removed through the opening I9 without any diiculty. Since the paddles 21 and 28 are combined with the cover plate 25 and can be removed therewith, the washing of the interior of the churn is greatly facilitated as well as the washing of the paddles themselves. This feature is of prime importance Y in this invention.

It is to be understood that various modifications may be made without departing from the spirit of the invention disclosed nor the scope thereof as defined in the appended claim.

What is claimed is:

For attachment to a driven shaft rotatable about a horizontal axis, a churn for churning butter and the like, said churn including a rotatable casing-provided with an axial stub shaft for attachment to said driven shaft, the casing having an axial opening the opening being of substantially less cross-sectional dimension than the outer peripheral edge of the casing, a closure plate disposed over the opening, said closure plate including a tubular shaft projecting into the casing substantially in axial alignment with the stub shaft, la plurality of paddle members on said tubular shaft, said paddle members projecting radially outwardly Within the casing, at least one of said paddle members projecting beyond the opening and substantially adjacent to the peripheral wall of the casing, means for tightly securing the closure member over the opening for sealing said casing, said means including a pin securely connected at one end to the casing, said pin extending longitudinally within the tubular shaft, means securely connecting said pin with said closure plate, and

vclamping means `connecting said stub shaft to said driven shaft whereby the casing is rotatable with said shaft about a horizontal axis.

WILLIAM H. HARSTICK.

REFERENCES CITED Therfollowing references are of record in the le ofv this patent:

UNITED STATES PATENTS Number Name Date 18,035 Borrman Aug. 25, 1857 53,429 Felthouse et al. Mar. 27, 1866 135,672 Spiess Feb. 1l, 1873 913,399 Kilpatrick Feb. 23, 1909 1,465,179 Risberg Aug. '14, 1923 2,056,582 Morissette, Sr Oct. 6, 1936 

